SPENCER DONALD D. (1985). LEARNING BASIC FOR MICROCOMPUTERS: A WORKTEXT FOR THE IBM. CHARLES E MERRILL PUBLISHING COMPANY.
Lua i Stíl Chicago (17ú heag.)SPENCER DONALD D. LEARNING BASIC FOR MICROCOMPUTERS: A WORKTEXT FOR THE IBM. LONDON: CHARLES E MERRILL PUBLISHING COMPANY, 1985.
Lua MLA (9ú heag.)SPENCER DONALD D. LEARNING BASIC FOR MICROCOMPUTERS: A WORKTEXT FOR THE IBM. CHARLES E MERRILL PUBLISHING COMPANY, 1985.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.